UBUNTU-CVE-2026-45064
A vulnerability in the Symfony PHP framework's UrlSanitizer::parse() function allows Unicode explicit-direction BiDi formatting characters to pass into sanitized href and src attributes. This can cause the displayed link destination to differ visually from the actual destination, enabling phishing-style visual spoofing. The issue affects multiple Symfony versions prior to 6.4.40, 7.4.12, and 8.0.12, where it has been fixed.
AI Analysis
Technical Summary
Symfony versions from 6.1.0-BETA1 until 6.4.40, 7.4.12, and 8.0.12 have a vulnerability in the UrlSanitizer::parse() method. This method improperly allows Unicode BiDi formatting characters to remain in sanitized href and src attributes. As a result, sanitized content can visually display a link destination that differs from the actual URL, facilitating phishing-style visual spoofing attacks. The vulnerability is resolved in Symfony versions 6.4.40, 7.4.12, and 8.0.12.
Potential Impact
An attacker can craft links that appear to direct users to legitimate destinations but actually lead to different URLs, enabling phishing-style visual spoofing. This can deceive users into clicking malicious links, potentially leading to credential theft or other social engineering attacks. There is no indication of direct code execution or system compromise from this vulnerability alone.
Mitigation Recommendations
A fix is available in Symfony versions 6.4.40, 7.4.12, and 8.0.12. Users should upgrade to these or later versions to remediate the vulnerability. Since this is not a cloud service, manual patching or upgrading is required. Patch status is confirmed by the vendor advisory stating the issue is fixed in these versions.
UBUNTU-CVE-2026-45064
Description
A vulnerability in the Symfony PHP framework's UrlSanitizer::parse() function allows Unicode explicit-direction BiDi formatting characters to pass into sanitized href and src attributes. This can cause the displayed link destination to differ visually from the actual destination, enabling phishing-style visual spoofing. The issue affects multiple Symfony versions prior to 6.4.40, 7.4.12, and 8.0.12, where it has been fixed.
CVSS v4.0
Affected software
pkg:deb/ubuntu/[email protected]?arch=source&distro=xenialpkg:deb/ubuntu/[email protected]+dfsg-1ubuntu0.1+esm2?arch=source&distro=esm-apps/bionicpkg:deb/ubuntu/[email protected]+dfsg-1ubuntu1+esm2?arch=source&distro=esm-apps/focalpkg:deb/ubuntu/[email protected]+dfsg-1ubuntu8+esm1?arch=source&distro=esm-apps/jammypkg:deb/ubuntu/[email protected]+dfsg-3ubuntu3+esm1?arch=source&distro=esm-apps/noblepkg:deb/ubuntu/[email protected]+dfsg-1?arch=source&distro=questingpkg:deb/ubuntu/[email protected]+dfsg-1ubuntu1?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Symfony versions from 6.1.0-BETA1 until 6.4.40, 7.4.12, and 8.0.12 have a vulnerability in the UrlSanitizer::parse() method. This method improperly allows Unicode BiDi formatting characters to remain in sanitized href and src attributes. As a result, sanitized content can visually display a link destination that differs from the actual URL, facilitating phishing-style visual spoofing attacks. The vulnerability is resolved in Symfony versions 6.4.40, 7.4.12, and 8.0.12.
Potential Impact
An attacker can craft links that appear to direct users to legitimate destinations but actually lead to different URLs, enabling phishing-style visual spoofing. This can deceive users into clicking malicious links, potentially leading to credential theft or other social engineering attacks. There is no indication of direct code execution or system compromise from this vulnerability alone.
Mitigation Recommendations
A fix is available in Symfony versions 6.4.40, 7.4.12, and 8.0.12. Users should upgrade to these or later versions to remediate the vulnerability. Since this is not a cloud service, manual patching or upgrading is required. Patch status is confirmed by the vendor advisory stating the issue is fixed in these versions.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-45064
- Osv Schema Version
- 1.7.0
- Aliases
- []
- Ecosystems
- ["Ubuntu:16.04:LTS","Ubuntu:Pro:18.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:Pro:22.04:LTS","Ubuntu:Pro:24.04:LTS","Ubuntu:25.10","Ubuntu:26.04:LTS"]
- Database Specific Severity
- null
- Cvss Version
- 4.0
Threat ID: 6a58b4b168715ace43da95cf
Added to database: 07/16/2026, 10:38:41 UTC
Last enriched: 07/16/2026, 12:50:40 UTC
Last updated: 07/16/2026, 12:50:40 UTC
Views: 2
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